What was found
NR 1 COWL VALVE OPEN BRIGHT BLUE DISAGREE LIGHT ILLUMINATED WHEN ENGINE ANTI-ICE POSITIONED ON. THRUST WAS AT IDLE. ACFT GROUNDED. REMOVED AND REPLACED THE NR 1 ENGINE COWL TAI VALVE IAW AMM 30-21-11. OPS AND LEAK CHECKED GOOD.
- Difficulty date
- September 7, 2017
- Submitted
- September 11, 2017
- Operation
- Air carrier
- Aircraft
- N459AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 36352
- Aircraft time
- 14,127 hours, 4,680 cycles
- Engine
- Cfmint CFM567B27E
- System (JASC)
- 7510 · Engine Anti-Icing System
- Part
- Valve
- Part number
- 32156185
- Part serial
- 10763
- Condition
- Failed
- Location
- Nr 1 Anti Ice Sy
- Part time
- 14,121 hours, 4,675 cycles
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.